In the novel "Catch-22" by Joseph Heller, a character intentionally mixes numerous cakes of GI soap into sweet potatoes to make a statement about people's lack of discernment. This act underscores his belief that society, exemplified by the diners, has a poor sense of taste and cannot appreciate quality. He perceives this as a demonstration of the 'Philistine' nature of people's preferences.

This provocative act serves as a critique of cultural values and raises questions about the nuances of taste and appreciation in life. Heller uses this example to expose the absurdity of conformity and the failure of individuals to recognize and cherish what is truly good. Through this satirical lens, he explores themes of individuality and societal norms.